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Generic wiring instructions for (possibly)
other versions of the Motorola Amplified Speaker
(Sorry, I cannot tell you which model they are for, OR how accurate they are.)
Red, yellow, and green wires connect to +13.8v.
Black and white wires connect to ground.
Brown is audio signal + and the shield is audio signal - (ground).
Power and signal grounds should be connected together at the end of the
cable opposite the speaker.
The green wire operates the MUTE circuit, which mutes the amp when
this line is switched to ground and turns the amp on when it is supplied
with any voltage greater than a few volts. Connecting the green wire to
+13.8VDC keeps the speaker on whenever power is applied.
DO NOT BE MISLED BY SOME MOTOROLA SPEAKERS..!
Not all Motorola speakers are 'AMPLIFIED' speakers, especially those which
are completely contained within PLASTIC enclosures with enclosure backs which
appear to be 'form-fitted' around the back of the speaker.
The NSN6026A is one example. While this is a VERY NICE 3.2 Ohm (possibly 4
Ohm) speaker, it is NOT an amplified design and requires NO modifications.
If you are looking for a Motorola AMPLIFIED speaker, be certain that is what you
are purchasing, BEFORE you complete the transaction. If there is only a 2-wire
connection coming out of the back of the speaker enclosure, there is a 95%
chance that the speaker is not of the amplified design.
Also note that many, if not most, radios designed for MOBILE operation, or those
designed to be powered directly from 12VDC, are designed to drive low-
impedance (3.2 Ohm to 4 Ohm) speaker loads MUCH better than the more
commonly available 8-Ohm speakers. So if you wish to find a nice speaker for
your 12VDC-powered radio, you will generally be happier with a 3.2 to 4-Ohm
speaker than with an 8-Ohm device.
Your mileage may vary - Caveat Emptor!!!
WARNING
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